鋼中酸化アルミニウムの存在形について
1974 年 60 巻 13 号 p. 2013-2017
詳細
1974 年 60 巻 13 号 p. 2013-2017
Aluminium oxides produced by deoxidation process of steel were examined interms of ir. absorption spectroscopy. Theta or the analogous phase of Al2O3 was found generally in Al-killed steel.
Absorption spectrum proves the tetrahedral sites in monoclinic Al2O3 are partially occupied by Al atom and the occupation probability ratio of tetrahedral site to octahedral site is not constant in deoxidized and killed steel by Al. The deoxidation product could be considered to be in the transitional structure from theta to alpha phase. Preliminary experiments show the theta crystal synthesized is partially soluble to acids compared with alpha-Al2O3. The solubility to acids may effect on the collecting yield of Al2O3 included in steel.
